Feature flag:
- [project.extra.action_points] enabled (default true) in zensical.toml.
- overrides/main.html exposes it as window.TOA_ACTION_POINTS_ENABLED in
<head>, before extra_javascript loads.
- extra.js bails at the top of the IIFE when the flag is false: no
storage, no nav badges, no heading pills, no confetti, no per-click
work. Checkboxes fall back to Material's read-only tasklist.
Verified inert when disabled (0 badges/pills/canvases, no localStorage,
no JS errors).
Perf:
- In-memory write-through cache for the parsed store: a single toggle
went from 15 localStorage JSON.parse reads to 0.
- updateNavBadges() updates badges in place (reuse span, only write on
change) instead of removing+rebuilding every badge each toggle, which
forced a full Material nav relayout. JS/toggle ~0.37->0.26ms,
layout delta ~0.73->0.63ms.
Legibility:
- Override -webkit-text-fill-color (headings set it; pseudo-elements
inherit it and it beats `color`) to #fff on completed green pills and
nav badges, so the count/checkmark is white on green. h2 text color
itself untouched.
